Packet-making machine.



W. E. MOLINS. PACKET MAKING MACHINE.

APPLIO ATION FILED MAR. 13, 1913.

W. E. MOLINS.

PACKET MAKING MACHINE.

APPLICATION FILED MAR. 1a, 1913;

Patented Nov. 3, 1914.

2 SHEETSSHEET 2.

VII/II wazze/wMum/J WALTER EVERETT MOLINS, OF LONDON, ENGLAND.

PACKET-MAKING MACHINE.

Specification of lLetters Patent.

Patented Nov. 3. 1914.

Application filed March 13, 1913. Serial No. 754,103.

To all whom t'tmay concern:

Be it known that I, VALTER EVERETT MoLINs, a citizen of the UnitedStates of America, residing in London, England, have inventedcertain newand useful Improvements in Packet-Making Machines, of which thefollowing is a specification.

This invention relates to a machine for making packets of lead or othermetal foil and it has for its object to provide a machine in which thelead or other foil is wrapped around a suitable former and the foverlapping metal fused or softened by the application of heat so that ahomogeneous joint is formed.

Now according to the present invention I effect the fusing or softeningof the metal by the simultaneous. application of heat upon the insideand outside of the seam or 'joint of the packet.

In carrying the invention into effect I may employ a plunger or formerupon which the packet is formed by wrapping around it the metal foil,any suitable mechanism being provided for this purpose, such forinstance as that described in my prior U. S. application, Seriel Number{370,137 filed January 9, 1912, which, forming no part of the presentinvention, 1s only generally shown in the accompanying drawings. Theformer, however, is hollow and has disposed within it a heaterpreferably in the form of an electric resistance coil which is suitablyinsulated from the plunger and to which current is supplied either bymeans of leads connected to the terminals of the heater and passingthrough the former or in any other suitable manner. Co-

operating with the said vformer and arranged to'act upon the sides ofthe packet after the folds have been made are rollers which may beeither rotated by their contact with the packet upon the former, or

. they 'may be positively" driven in any suitthe Letters Patent No. 111655.

the machine, the plunger being shown in sectlon. Fig. 2 is a frontelevation of the same. Fig. 3 is a longitudinal sectional yiew of one ofthe heating rollers. Fig. 4 is an end view of the same. Fig. 5 is across sectional view on line A A Fig. 2. Figs.

' 6 and 7 are front and side views respectively of a modified form ofheater which may be substituted for the heating rollers. Fig.8 IS aperspective view of a packet.

Referring to the appended drawings a indicates the frame of the machineupon the front of which are brackets 25 upon which the. foil is placedready for the operationof the plunger 0 shown in half section, Fig. 1,which is caused to reciprocate 1I 1 any convenient manner, and ismaintained in position by means of rollers such as w 3/ of which onlytwo are shown and of which those w have projections such as m engagingchannels 00 in the side of the plunger. The function of the said rollersis to provide suitable roller bearings and guides for the heatedreciprocating plunger to .serve as guides therefor and prevent lateralmovement thereof.

(Z indicates a tilting folder such as that. described in theaforementioned patent and with which coiiperates a fixed folder d Theplunger 0 just-referred to is-hollow and hassecured to it on each side aheater;

electricity through the leads 0*, Figs. 1 and 2. By this means the sidesof the plunger are raised to such a temperature that the metal whenwrapped around it is sufiiciently heated to, so to speak, soften it tothe extent that when the folded packet comes into contact with theexterior heating device the desired fusion of the metal will take placealong the joint or seam of the packet 'P, Fig. 8.

The exterior heating device just referred to comprises a roller 6 ofwhich two are provided, one disposed upon each side of the line ofmovement of the former, and each so arranged that they contact with thesides of the packet immediately after the.

v f the aforesaid fixed folding, bpdies (Z. In the present instance therolloperation 0 ers are mounted upon spindles e for which bearings areprovided upon brackets e secured tothe frame a. The. rollers e arehollow and have arranged within them a resecuring the insulation of therings 6 Electricity. is supplied to the coils 'on the roll-.

ers by means of the brushes f which bear against the aforesaid rings 6The surface of the rollers may be knurled or otherwise treated so thatthe formation of a plain" strip of metal on the seam is avoided.

'The removal of the packets from the plunger may be effected by means ofthe stripping plate g attached on the bottom of the plunger to the rods9 within the plunger. The packets when discharged are received upon thetable it and are moved forward thereon by means of the plate 2' attachedto rods 2' passing through guides i and operated by means of the rod andlever '5 and '5, and the cam 11*.

Obviously the construction and arrangement ofthe parts may be varied asmay be required to suit the requirements of individual cases, and ifdesired, the rollers may be replaced by heated shoes, as shown in dottedlines at e in Fig. 1, and separately in Figs. 6 and 7.- Again therollers instead of, as illustrated, being driven by friction from theplunger, may be positively operated by means of pulleys e on the rollershaft 6 see dotted lines Fig. 2, so that they assist in removing thepacket from theplunger.

Having now particularly described and ascertained the nature of my saidinvention,

I declare that what I claim is 1. In a machine for forming packets ofmetal foil, the combination witha plunger, of means for heating-saidplunger, means for folding a metal foil blank about said plunger to forma packet With overlapping edges extending longitudinally of saidplunger, and means for heating said packet .on the exterior along theoverlapped edges to fuse the meeting edges of the packet.

2. In a machine for forming packets of metal foil, the combination withav plunger, of means for heating said plunger, means for folding a metalfoil blank about said plunger to form a packet with overlapping edgesextending longitudinally of said plunger, and means for simultaneouslypressing and heating said packet on the exterior along the overlappededges to seal the same.

meeting edges of said packet within and Without and fuse the same.

4. In a machine for forming packets of metal foil, the combination witha plunger, and means for folding a metal foil blank about said plunger,of a heating means carried by said plunger on opposite sides thereof andmovable therewith, and an external heating means mounted on the machineframe on each side the path of movement of the plunger past which saidpacket is carried by the plunger and operating in conjunction with theheating means on said plunger to heat the meeting edges of said packetwithin and without and fuse the same.

0 5. In a machine for forming packets of metal foil, the combinationwith a plunger, and means for forming a metal foil blank about saidplunger, of a heating means carried by said plunger on opposite sidesthereof, and an external heating means below the folding means on eachside the path of movement of the plunger adapted to operate inconjunction With the heating means on the plunger to fuse the meetingedges of Q the packet as it is being ejected from the folding devices.

6. In a machine for forming packets of metal foil, the combination witha plunger, and means for folding a metal foil blank about said plunger,of relatively fixed heating means below the folding mechanism on eachside the path of movement of said plunger adapted to heat .the lappededges of said packet on their outer sides, and a movable heating deviceon each side ofsaid plunger for heating the inner sides of said lappededges, said heating devices co'ciperat ing to fuse said edges and forminseparable joints.

7. In a machine for forming packets of metal foil, a plunger, means forfolding a metal foil blank thereabout so that the edges thereof overlap,and a roller having a knurled exterior for pressing the overlappingedges against the plunger, and means for heating said roller to fuse thesaid edges togethen'. o

8. In a machine for forming packets of metal foil, a plunger, meanscooperating Withsaid plunger to fold the foil blank thereupon withoverlapping edges extending along opposite sides of sa d plunger, meansfor heatingsaid plunger on the interior to heat the overlapping edges onthe inner side, rollers adapted to engage the opposite sides of theplunger and roll on the overlapped edges to press the same, and meansfor heating said rollers to heat the exterior of the overlapped edges asthey with said plunger to fohl a' metal blank thereupon with the edgesthereof overlapping on opposite sides of said plunger, rollers arrangedon opposite sides of the path of movement of the plunger to engage theoverlapping edges, said rollers having heat conducting cylindricalportions, electric heating coils disposed on the interior of saidrollers near said heat conducting portions, and means for maintainingelectrical connection with the ends of said coils as the rollers rotateto heat said rollers for heating the overlapping edges as the plungerpasses between the rollers.

10. In a machine for forming packets of metal foil, a plunger, meanscooperating with said plunger to fold the foil blank I thereupon withoverlapping edges extending along opposite sides of said plunger,

means for heating said plunger on the interior to heat the overlappingedges on the inner side, rollers adapted to en age the opposite sides ofthe plunger an roll on the overlapped edges to press the same, and meansfor heating said rollers to heat the exterior of the overlapped edges asthey pass said rollers, a receiving table below the rollers adapted toreceive the packet therefrom, and a pusher for advancing each packetreceived by the table, laterally-on the table to move the same out, ofthe way of the next following packet 11. In a machine or forming'packetsof metal foil, a plunger, means cooperating with said plunger to foldthe foil blank I thereupon with overlapping edges extending alongopposite sides of said plunger,

means for heating said plunger on the interior to heat the overlappingedges on the inner side, rollers adapted to engage the opposite sides ofthe plunger and roll on the overlapped edges to press the same, andmeans for heating said rollers to heat the exterior of the overlappededges as they pass said rollers, a horizontal table disposed the plungerwith the edges of the blank overlapping in a longitudinal direction onsaid plunger, means for heating the overa lapped edges from the 'inn'erside of said plunger, and means for pressing and heatmg the overlappingedges on the exterior to fuse the same. i 4

In witness w ereof I have hereunto affixed my signat re in thepresenceof the undersigned Witnesses this twenty-second day of Februaryin' the year of our Lord 1913.

' WALTER EVERETT MOLINS. Witnesses:

WILLIAM Homms, ARTHUR GEORGE GOBELL.

